<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width initial-scale=1.0">
    <title>选择</title>
</head>

<body>
    <div>
        <select name="province" id="province">
            <option value="">请选择</option>
            <option value="湖北省">湖北省</option>
            <option value="江苏省">江苏省</option>
        </select>
        <select name="city" id="city">
            <option value="">请选择</option>
        </select>
    </div>
    <script src="index.js"></script>
</body>

</html>